Remove deprecated filter (#4962)

files/class-curl-streamer.php

@@ -10,19 +10,13 @@ public function __construct( $file_path ) {
 	}
 
 	public function init() {
-		add_filter( 'http_api_transports', [ $this, 'enforce_curl_transport' ] );
 		add_action( 'http_api_curl', [ $this, 'init_upload' ], 10 );
 	}
 
 	public function deinit() {
-		remove_filter( 'http_api_transports', [ $this, 'enforce_curl_transport' ] );
 		remove_action( 'http_api_curl', [ $this, 'init_upload' ] );
 	}
 
-	public function enforce_curl_transport() {
-		return [ 'curl' ];
-	}
-
 	public function init_upload( $curl_handle ) {
 		// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_fopen -- FP - the file is opened read-only
 		$file_stream = fopen( $this->file_path, 'r' );

tests/files/test-curl-streamer.php

@@ -30,22 +30,6 @@ public function tearDown(): void {
 		parent::tearDown();
 	}
 
-	public function test__init() {
-		global $wp_version;
-
-		$version = preg_replace( '/-.*$/', '', $wp_version );
-		if ( version_compare( $version, '6.4', '>=' ) ) {
-			$this->setExpectedDeprecated( 'http_api_transports' );
-		}
-
-		$expected_transport = 'WP_Http_Curl';
-
-		$wp_http          = new \WP_Http();
-		$actual_transport = $wp_http->_get_first_available_transport( [] );
-
-		$this->assertEquals( $expected_transport, $actual_transport );
-	}
-
 	public function test__init_upload() {
 		$this->markTestSkipped( 'Cannot get `curl` opts, making this hard to test. We can look into using a test webserver in the future.' );
 	}